Manley Extreme Duty Stainless Exhaust Valve - 1.880 in Head - 11/32 in Valve Stem - 5.522 in Long - Big Block Chevy (Set of 8) WELP857B-5914 it's possible to see gains

it's possible to see gains of 10hp and 8 lb

Chevrolet Mark-IV Big Block V8 Rear Main Seal

NOTE: The gaskets may be labeled left or right

The polyurethane bushings are designed to be bolted to the car chassis for a quiet comfortable operation

Manley Extreme Duty Stainless Exhaust Valve - 1.880 in Head - 11/32 in Valve Stem - 5.522 in Long - Big Block Chevy (Set of 8) WELP857B-5914 it's possible to see gainsDiscover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors, these valves are your ticket to unparalleled performance. Product Description: Exhaust Valve Extreme Duty 1. 880 in Head 11 32 in Valve Stem 5. 522 in Long Stainless